US2714683A - Electroluminescent bulb - Google Patents

Electroluminescent bulb Download PDF

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Publication number
US2714683A
US2714683A US323588A US32358852A US2714683A US 2714683 A US2714683 A US 2714683A US 323588 A US323588 A US 323588A US 32358852 A US32358852 A US 32358852A US 2714683 A US2714683 A US 2714683A
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United States
Prior art keywords
bulb
layer
conductive
electroluminescent
sealed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US323588A
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Henry G Jenkins
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General Electric Co
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General Electric Co
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Publication date
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Publication of US2714683A publication Critical patent/US2714683A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/20—Electroluminescent [EL] light sources

Definitions

  • the conducting coating may be applied by spraying or painting the layer 4 with a suitable conducting material but is preferably applied by the evaporation of a suitable metal such as aluminum.
  • This evaporation may convenientiy be effected by attaching a short length of Wire of the metal between the leads 7 and 8, as indicated by the dotted line 18 in the drawing, and after evacuation of the bulb7 heating the Wire by the passage of current through it, with the bulb support neck downwards, so as to evaporate the wire and form the required coating, an insulating bae 19 attached to the leads 7 and 8 preventing the possibility of the evaporated metal short-circuiting the two conducting coatings at the neck of the bulb.
  • the bulb is then filled with dry nitrogen to atmospheric pressure and sealed, after which the cap is attached to the neck of the bulb.
  • the alkyd resin known under the British trade name Paralac 1G is a long-oil linseed oil Inodiiied alkyd resin containing pentaerythritol and no added glycerol.
  • An electroluminescent lamp comprising a transparent bulb sealed free of moisture and having a conductive inside surface, a layer containing an electroluminescent material formed over said conductive surface, a conductive layer formed over said electroluminescent material layer, and lead wires sealed into said bulb and connected, one to said conductive surface and the other to said conductive layer.
  • An electroluminescent lamp comprising a vitreous bulb sealed free of moisture, a conductive coating formed on the inside surface of said bulb, a layer containing an electroluminescent phosphor formed over said conductive coating, a conductive layer formed over said electroluminescent layer, and a pair of lead Wires sealed into said bulb and connected, one to said conductive coating, and the other to saidconductive layer.
  • An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of dielectric material containing a dispersion of an electroluminescent phosphor formed over said conductive coating, a conductive layer formed over said electroluminescent layer, a pair of lead wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a filling of a dry gas seaied within said bulb.
  • An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of an electroluminescent phosphor in a dielectric binder adherent to said conductive coating, an insulating layer of a dielectric material adherent to said electroluminescent layer, a conductive layer formed over said insulating layer, a pair of lead wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a filling of a dry gas sealed within said bulb.
  • An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of a zinc sulphide phosphor in an alkyd resin adherent to said conductive coating, an insulating layer of an alkyd resin adherent to said phosphor layer, a conductive layer of evaporated metal adherent to said insulating layer, a pair of lead Wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a nlling of a dry gas sealed within said bulb.

Description

s. nu N V/ wn e i td n.. t eGKt VYrA mr e H M if H/ f Y IO H. G. JENKINS ELECTROLUMINESCENT BULB Filed Dec. 2, 1952 Aug. 2, 1955 Gianni,
0.25% by weight of copper in the dried mixture, the the latter being ground thoroughly and fired at 800900 C. in a closed boat for several hours.
The conducting coating may be applied by spraying or painting the layer 4 with a suitable conducting material but is preferably applied by the evaporation of a suitable metal such as aluminum. This evaporation may convenientiy be effected by attaching a short length of Wire of the metal between the leads 7 and 8, as indicated by the dotted line 18 in the drawing, and after evacuation of the bulb7 heating the Wire by the passage of current through it, with the bulb support neck downwards, so as to evaporate the wire and form the required coating, an insulating bae 19 attached to the leads 7 and 8 preventing the possibility of the evaporated metal short-circuiting the two conducting coatings at the neck of the bulb. The bulb is then filled with dry nitrogen to atmospheric pressure and sealed, after which the cap is attached to the neck of the bulb.
While a certain specic embodiment of the invention has been shown and described, various modiications thereof are possible, and the appended claims are intended to cover any such modications coming within the scope of the invention.
The alkyd resin known under the British trade name Paralac 1G is a long-oil linseed oil Inodiiied alkyd resin containing pentaerythritol and no added glycerol.
What l claim as new and desire to secure by Letters Patent of the United States is:
1. An electroluminescent lamp comprising a transparent bulb sealed free of moisture and having a conductive inside surface, a layer containing an electroluminescent material formed over said conductive surface, a conductive layer formed over said electroluminescent material layer, and lead wires sealed into said bulb and connected, one to said conductive surface and the other to said conductive layer.
2. An electroluminescent lamp comprising a vitreous bulb sealed free of moisture, a conductive coating formed on the inside surface of said bulb, a layer containing an electroluminescent phosphor formed over said conductive coating, a conductive layer formed over said electroluminescent layer, and a pair of lead Wires sealed into said bulb and connected, one to said conductive coating, and the other to saidconductive layer.
3. An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of dielectric material containing a dispersion of an electroluminescent phosphor formed over said conductive coating, a conductive layer formed over said electroluminescent layer, a pair of lead wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a filling of a dry gas seaied within said bulb.
4. An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of an electroluminescent phosphor in a dielectric binder adherent to said conductive coating, an insulating layer of a dielectric material adherent to said electroluminescent layer, a conductive layer formed over said insulating layer, a pair of lead wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a filling of a dry gas sealed within said bulb.
5. An electroluminescent lamp comprising a vitreous bulb, a conductive coating formed on the inside surface of said bulb, a layer of a zinc sulphide phosphor in an alkyd resin adherent to said conductive coating, an insulating layer of an alkyd resin adherent to said phosphor layer, a conductive layer of evaporated metal adherent to said insulating layer, a pair of lead Wires sealed into said bulb and connected, one to said conductive coating and the other to said conductive layer, and a nlling of a dry gas sealed within said bulb.
References Cited in the tile of this patent UNITED STATES PATENTS Light, by E. C. Payne, E. L. Mager and C. W. Jerome, Illuminating Engineer, November 1950, pp. 688-692.

Claims (1)

1. AN ELECTROLUMINESCENT LAMP COMPRISING A TRANSPARENT BULB SEALED FREE TO MOISTURE AND HAVING A CONDUCTIVE INSIDE SURFACE, A LAYER CONTAINING AN ELECTROLUMINESCENT MATERIAL FORMED OVER SAID CONDUCTIVE SURFACE, A CONDUCTIVE LAYER FORMED OVER SAID ELECTROLUMINESCENT MATERIAL LAYER, AND LEAD WIRES SEALED INTO SAID BULB AND CONNECTED,
US323588A 1951-12-19 1952-12-02 Electroluminescent bulb Expired - Lifetime US2714683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2714683X 1951-12-19

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US2714683A true US2714683A (en) 1955-08-02

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DE (1) DE957249C (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780746A (en) * 1953-10-01 1957-02-05 Westinghouse Electric Corp Incandescent-electroluminescent lamp
US2880346A (en) * 1954-09-30 1959-03-31 Rca Corp Electroluminescent device
US2967964A (en) * 1956-06-08 1961-01-10 Libbey Owens Ford Glass Co Electroluminescent lamp
US3048732A (en) * 1958-01-24 1962-08-07 Westinghouse Electric Corp Electroluminescent cell
US3089973A (en) * 1961-03-22 1963-05-14 Rca Corp Electroluminescent device
US3252035A (en) * 1963-02-25 1966-05-17 Westinghouse Electric Corp Electroluminescent lamp with built-in rearwardly-disposed input terminals
US3351347A (en) * 1964-04-10 1967-11-07 Charles J Smith Electroluminescent game ball
US3458205A (en) * 1965-04-05 1969-07-29 Charles J Smith Illuminable game ball
US3790775A (en) * 1971-11-19 1974-02-05 R Rosenblatt Body ornament with electroluminescent portion
US3814973A (en) * 1972-09-05 1974-06-04 Duro Test Corp Electric lamps of the vibrating filament type having a conductive coating
WO1995028597A1 (en) * 1994-04-18 1995-10-26 E-L Holding, Inc. Electroluminescent lamps and methods of manufacture
US5730079A (en) * 1996-12-04 1998-03-24 Totty; Kirby R. Electroluminescent light for night fishing
US6246169B1 (en) 1997-11-17 2001-06-12 Molex Incorporated Electroluminescent lamp and having a flexible dome-shaped substrate
WO2013023748A1 (en) * 2011-08-12 2013-02-21 Technische Universität Dresden Optoelectronic component and method for treating the interior of a hollow body with a liquid

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051400B (en) * 1956-08-22 1959-02-26 Egyesuelt Izzolampa Electricity electroluminescent light cell
DE1047941B (en) * 1957-08-10 1958-12-31 Siemens Ag Signal light based on electroluminescence
DE102009051962A1 (en) 2009-11-04 2011-05-05 Emde Projects Gmbh Lamp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2103053A (en) * 1936-09-03 1937-12-21 Gen Electric Gaseous electric discharge device
US2211590A (en) * 1937-06-05 1940-08-13 Gen Electric Gaseous electric discharge lamp device
US2566349A (en) * 1950-01-28 1951-09-04 Sylvania Electric Prod Electroluminescent lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE497702A (en) *
US2429420A (en) * 1942-10-05 1947-10-21 Libbey Owens Ford Glass Co Conductive coating for glass and method of application
GB567184A (en) * 1943-04-16 1945-02-01 Ernest Joffre Sherwood Improvements in or relating to electric light sources

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2103053A (en) * 1936-09-03 1937-12-21 Gen Electric Gaseous electric discharge device
US2211590A (en) * 1937-06-05 1940-08-13 Gen Electric Gaseous electric discharge lamp device
US2566349A (en) * 1950-01-28 1951-09-04 Sylvania Electric Prod Electroluminescent lamp

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780746A (en) * 1953-10-01 1957-02-05 Westinghouse Electric Corp Incandescent-electroluminescent lamp
US2880346A (en) * 1954-09-30 1959-03-31 Rca Corp Electroluminescent device
US2967964A (en) * 1956-06-08 1961-01-10 Libbey Owens Ford Glass Co Electroluminescent lamp
US3048732A (en) * 1958-01-24 1962-08-07 Westinghouse Electric Corp Electroluminescent cell
US3089973A (en) * 1961-03-22 1963-05-14 Rca Corp Electroluminescent device
US3252035A (en) * 1963-02-25 1966-05-17 Westinghouse Electric Corp Electroluminescent lamp with built-in rearwardly-disposed input terminals
US3351347A (en) * 1964-04-10 1967-11-07 Charles J Smith Electroluminescent game ball
US3458205A (en) * 1965-04-05 1969-07-29 Charles J Smith Illuminable game ball
US3790775A (en) * 1971-11-19 1974-02-05 R Rosenblatt Body ornament with electroluminescent portion
US3814973A (en) * 1972-09-05 1974-06-04 Duro Test Corp Electric lamps of the vibrating filament type having a conductive coating
WO1995028597A1 (en) * 1994-04-18 1995-10-26 E-L Holding, Inc. Electroluminescent lamps and methods of manufacture
US5730079A (en) * 1996-12-04 1998-03-24 Totty; Kirby R. Electroluminescent light for night fishing
US6246169B1 (en) 1997-11-17 2001-06-12 Molex Incorporated Electroluminescent lamp and having a flexible dome-shaped substrate
WO2013023748A1 (en) * 2011-08-12 2013-02-21 Technische Universität Dresden Optoelectronic component and method for treating the interior of a hollow body with a liquid

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Publication number Publication date
DE957249C (en) 1957-01-31

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